how to fix P0301 misfire code on Ford Mustang S550 (2015-2023)

Solution

1. Preparation

• Gather necessary tools and parts before starting the repair.
• Disconnect the battery negative terminal to ensure safety.
• Allow the engine to cool down if it has been running.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil by unscrewing the retaining bolts and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket. Inspect the old spark plug for wear.
• Install the new spark plug by hand, then torque it to the manufacturer's specification (typically around 13-18 lb-ft).
• Reattach the ignition coil ensuring it is securely fastened.

3. Replace Ignition Coil (if necessary)

• If the ignition coil shows signs of damage or wear, replace it.
• Disconnect the electrical connector and remove the ignition coil.
• Install the new ignition coil and reconnect the electrical connector.
• Ensure all components are properly secured to avoid future issues.

4. Clean or Replace Fuel Injector (if necessary)

• If the fuel injector is clogged, either clean it using a fuel injector cleaning kit or replace it.
• Remove the fuel injector by detaching the fuel rail (ensure fuel system is depressurized).
• Install the cleaned or new fuel injector and reattach the fuel rail.
• Reconnect any hoses or electrical connectors removed during the process.